EP1736166B2 - Extracts from Ajuga reptans cell lines, their preparation and use - Google Patents

Extracts from Ajuga reptans cell lines, their preparation and use Download PDF

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Publication number
EP1736166B2
EP1736166B2 EP05425585.6A EP05425585A EP1736166B2 EP 1736166 B2 EP1736166 B2 EP 1736166B2 EP 05425585 A EP05425585 A EP 05425585A EP 1736166 B2 EP1736166 B2 EP 1736166B2
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Prior art keywords
extract
medicament
preparation
treatment
extract according
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German (de)
English (en)
French (fr)
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EP1736166B1 (en
EP1736166A2 (en
EP1736166A3 (en
Inventor
Renzo Dal Monte
Roberto Dal Toso
Anacleto Minghetti
Nicoletta Crespi Perellino
Giovanna Pressi
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IRB Istituto di Ricerche Biotecnologiche SpA
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IRB Istituto di Ricerche Biotecnologiche SpA
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Priority to EP08162332.4A priority Critical patent/EP1997501B1/en
Priority to EP05425585.6A priority patent/EP1736166B2/en
Application filed by IRB Istituto di Ricerche Biotecnologiche SpA filed Critical IRB Istituto di Ricerche Biotecnologiche SpA
Priority to US11/455,505 priority patent/US9623063B2/en
Priority to JP2006170554A priority patent/JP5443664B2/ja
Publication of EP1736166A2 publication Critical patent/EP1736166A2/en
Publication of EP1736166A3 publication Critical patent/EP1736166A3/en
Publication of EP1736166B1 publication Critical patent/EP1736166B1/en
Priority to JP2013173952A priority patent/JP5788936B2/ja
Publication of EP1736166B2 publication Critical patent/EP1736166B2/en
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    • A61K36/18—Magnoliophyta (angiosperms)
    • A61K36/185—Magnoliopsida (dicotyledons)
    • A61K36/53—Lamiaceae or Labiatae (Mint family), e.g. thyme, rosemary or lavender
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Definitions

  • the present invention relates to extracts derived from Ajuga reptans plant cell cultures obtained in a fermenter. Particularly, the present invention concerns the preparation and use of said extracts, for the production of drugs or nutritional or cosmetic substances, said extracts possessing not only antioxidant activity but also other important pharmacological properties.
  • Oxidative stress is a phenomenon which progresses over time, causing biological damage leading to cell death, and which is responsible for both the effects connected with lipoprotein peroxidation and death due to degeneration, in addition to death due to apoptosis. Indeed, oxidative stress has been recognised as a mediator of programmed cell death, responsible for the activation of T lymphocytes and the depletion of CD4+ T cells in AIDS ( Buttke T.M., Sandstrom P.A. "Oxidative stress as a mediator of apoptosis" Immunology Today, 1994, 15(1):7-10 ).
  • a first object of the invention is a process for manufacturing extracts from Ajuga reptans cells, which allows to obtain industrial amounts of phenylpropanoids.
  • a second object of the invention is total extracts or single substances from plant cell lines that can be obtained according to the above process.
  • a third object is to provide pharmaceutical, cosmetic or nutritional uses, either for human, veterinary and zootechnical purposes, of said total extracts or single substances.
  • the process of the invention comprises a first stage of cell culture selection based on the metabolite of interest.
  • this process envisages the collection of plant tissue, the cleaning thereof, for example under running water, cutting into fragments of 2-5 cm and sterilisation on plates, for example by sequential treatment with 70% ethanol for approx. 15 minutes, 2% sodium hypochlorite for approx. 5 minutes and finally 0.05% HgCl 2 for approx. 1 minute. Between treatments, the plant fragments are washed, typically three or more times with sterile distilled water.
  • Each fragment of said tissue, chopped-up even further (explants), is placed on a Petri dish containing nutrient medium, solidified by the addition of Agar and supplemented with growth hormones without the addition of any antibiotics.
  • the number of explants performed influences the outcome of the subsequent stages. Generally from 2000 to 5000 uncontaminated explants are sufficient to proceed to the subsequent selection stage.
  • undifferentiated callus tissue forms, which is then multiplied following transfer onto a greater surface area with fresh medium.
  • the plant cell line derived from the undifferentiated callus tissue is preferably stabilised by means of a certain number of transfers (sub-cultures) onto fresh culture medium.
  • a certain number of transfers sub-cultures
  • Such medium is solid in nature, and may be advantageously constituted by 0.8-1% agar in a standard culture medium, to which has been added plant peptone, allowing a balanced supply of aminoacids and guaranteeing the maintenance of good cell wall integrity.
  • plant peptone will be added in quantities ranging between 500 and 4000 mg/l of culture medium.
  • a “stable cell line” is defined as a culture having the following characteristics:
  • the cell line is subjected to "clonal selection". Such selection consists of growing the stabilised cells for an appropriate amount of time (typically, 10-15 days of culture). Subsequently, individual cell aggregates are taken from the solid culture medium and each of said cell aggregates is inoculated into liquid culture medium described above.
  • clone Following fermentation for such time necessary to obtain adequate multiplication of the cell aggregate (hereinafter referred to as "clone"), a time generally comprised of between 10 and 15 days, the content of the metabolite of interest is determined for each clone.
  • Such operations may be repeated until a plant cell line clone is selected, in which production of the metabolite of interest is the highest.
  • the selected plant cell line is then multiplied in order to obtain a sufficient quantity of biomass to carry out the production fermentation stage. Said quantity will depend on the specific production requirements, the plant cell line typology used and the type of metabolite it is desired to produce.
  • the biomass thus obtained may be passed directly into the final fermenter, or can be subjected to one or more further growth stages in liquid medium, working with intermediate volumes.
  • the process just illustrated includes the stages of:
  • the subsequent fermentation may preferably consist of the following stages:
  • the fermentation will normally be performed at a temperature of between 15°C and 35°C, typically around 25°C and for a period of time normally between 7 and 40 days, preferably between 14 and 21 days. It is essential that the biomass be adequately aerated and that at the same time be kept stirred by means of stirring external to the fermenter. Indeed, it has been observed that plant biomass is comprised of cells having cell-walls that are poorly resistant to rupture. A stirrer submerged into the biomass acts mechanically on the cells and can easily cause the lysis thereof. However, it is necessary that the stirring, although delicate, be efficient, above all in the final fermentation stages when the biomass greatly increases in density. For the purposes of the present invention, particularly appropriate methods of stirring are orbital means of stirring. Such means of stirring preferably operate at 40-200 rpm, more preferably at around 120 rpm.
  • the volume of the container (fermenter) in which the fermentation occurs be considerably greater than the volume of the biomass.
  • the volume of the reactor will be from 50% to 200% greater than the biomass volume.
  • Oxygenation is normally performed by using sterile air with a flow rate of 0.5-4 1/minute, more preferably 2-2.5 1/minute, for a volume of 10 litres of biomass.
  • gas mixtures containing from 10% to 100% v/v of oxygen may be used.
  • the shape of the fermentation chamber has significant importance. Indeed, it is recommended that it has a smooth and uniform surface, i.e. that there are no edges, corners or other parts which can cause the cell walls of the biomass rupture.
  • additives increasing water oxygen solubility will be added to the biomass.
  • Such additives will preferably be selected from those substances defined as “artificial blood", for example the perfluorinated hydrocarbons (PFC).
  • stabilized cell lines derived from Ajuga reptans have been selected for their ability to produce phenylpropanoids (FP) in suitable qualitative and quantitative amounts.
  • the Ajuga reptans cell line denominated IRBN22 at DSMZ (Deutsche Sammlung von Mikroorganismen und Zellkulturen, Braunschweig, D): DSM 16451, accession date: 31-03 2004) stabilized and selected in accordance with the above procedure is yellowish and opaque with brittle-looking cells.
  • the extraction process comprises the following stages in sequence:
  • a biomass filtration step may be performed under the same conditions reported in step c), with the aim of recovering just the biomass itself without any fermenter culture medium.
  • cultures of the cell line IRB22 in suspension obtained in accordance with the cited procedures, are harvested with ages comprised of between 7 and 21 days.
  • the enzyme deactivation treatment occurs by means of thermal treatment. Said thermal treatment occurs by heating the biomass at a temperature comprised of between 50°C and 150°C, preferably between 60°C and 120°C, for a time of less than 5 minutes, so as to inactivate all enzymes. Preferably, the thermal treatment involves the use of steam. Then, the biomass is homogenized using an ultraturrax, as described above.
  • the substances present in the clear aqueous phase that has been obtained subsequent to filtration or centrifugation of the homogenized biomass are batch extracted with hydrophobic interaction resin, preferably selected from polystyrene-divinylbenzene or acrylic matrix resins, and the adsorbed products are recovered from the resin by means of one or more elution steps with aqueous ethanol, from 30% to 95% by volume.
  • hydrophobic interaction resin preferably selected from polystyrene-divinylbenzene or acrylic matrix resins
  • the entire biomass is filtered as described above, and subjected to thermal treatment with steam at 120°C for a period of time varying between 5 and 30 minutes.
  • extract is meant herein an extract derived from cell cultures of the plant Ajuga reptans (Labiatae family), deriving from any method comprising varying percentages by weight of phenylpropanoids, teupolioside, metilteupolioside e isoteupolioside, the latter being a chemical entity unknown in the prior art, and a fraction devoid of any characteristic chromophores, present in variable quantities depending on the preparation method and consisting mainly, but not exclusively, of oligo- and poly-saccharide, protein and lipid molecules.
  • the extracts comprise phenylpropanoids of the following general formula (I), titrated in teupolioside wherein:
  • Extraction occurs by bringing the clear solution obtained subsequent to filtration or centrifugation of the homogenized biomass into contact with an appropriate quantity of resin, separating the resin and eluting said resin with a suitable eluent.
  • the attainment of the extracts varies as a function of numerous parameters.
  • the use of fermentation supernatant (which contains the part of the fraction devoid of chromophores and which is released from the cells during culture) during the filtration stage leads to a slight enrichment in phenylpropanoids due to the dilution effect.
  • a second factor is the quantity of resin used in relation to the quantity of material to be extracted, with less resin promoting the selective attachment of phenylpropanoids and hence consequent enrichment of the eluate.
  • extracts containing from 20% to 90% phenylpropanoids by weight preferably between 30% and 60%, with the remaining percentage fraction, comprised of between 80 and 10%, preferably between 70% and 40%, being comprised of a chromophore-free fraction, comprising mainly, but not exclusively, oligo- and polysaccharide, protein and lipid type molecules.
  • the thermal treatment performed on the biomass causes the isomerisation of teupolioside to isoteupolioside, and that the extent of said isomerisation depends on the treatment temperature and time. Temperatures comprised of between 50°C and 150°C, preferably between 60°C and 120°C, for a period of time sufficient to cause isomerisation (measurable by HPLC analysis as reported previously), between 5 and 30 minutes, are generally used to obtain the transformation of a percentage ranging between 40% and 60% of the teupolioside initially present into isoteupolioside. Thereby, the content of such substances in the filtered clear solution will also be modified.
  • the thermal treatment may be performed by heating externally or internally for example by the insufflation of steam into the biomass.
  • Non-thermally treated biomass will generally contain a percentage of between 5% and 25% isoteupolioside with respect to the mass of phenylpropanoids.
  • the percentage of isoteupolioside will generally be comprised of between 30% and 65% of the total mass of phenylpropanoids.
  • teupolioside and isoteupolioside have been found to exhibit pharmacological activities comparable to the extracts of the present application.
  • the teupolioside and isoteupolioside have a platelet aggregation, anti-inflammatory and anti-lipoxygenase, anti-5alpha reductase, anti-tyrosinase, antifungal and metal-chelating (Fe 2+ , Fe 3+ , Cu 2+ e Ni 2+ ) activity.
  • the cultures are used to likewise inoculate 1000 ml flasks, each containing 250 ml of liquid medium which are then unloaded after a period 14 days.
  • the biomass is combined and filtered through nylon mesh with a porosity of 100 ⁇ m.
  • the cells are suspended in an equal volume of H 2 O and briefly treated with steam (3-4 minutes).
  • the suspension is then homogenised using an ultraturrax and centrifuged in order to remove the sold residue.
  • the latter is then taken up in 5 vol. of H 2 O then homogenised and centrifuged.
  • the supernatants are combined and titrated by HPLC.
  • the analysis shows a content of phenylpropanoid expressed as teupolioside equal to 18.6 g.
  • teupolioside a content of phenylpropanoid expressed as teupolioside equal to 18.6 g.
  • To the aqueous solution is added 2 kg of Diaion HP 2MG resin and the slurry left stirring overnight. After removal of the aqueous phase by filtration, the resin is washed with a first portion of 10 litres of hydroalcoholic mixture EtOH:H 2 O (20:80), then eluted with three 10 litre batches of EtOH:H 2 O mixture (80:20). The combined eluates are concentrated to a small volume in an evaporator under reduced pressure. The lyophilised residual aqueous phase yields 14.5 g of a yellow powder.
  • the extract thus obtained has a titre equal to approx.
  • phenylpropanoids 13.06 g expressed as teupolioside, and approx. 10 wt%, in other components, constituted mainly, but not exclusively, by oligo- and polysaccharides, protein and lipid (saccharide fraction) type molecules.
  • the extract thus obtained is constituted by approx. 54 wt% of phenylpropanoids expressed as teupolioside, and approx. 46% of other components, constituted mainly, but not exclusively, by oligo- and polysaccharides, protein and lipid (chromophore-free fraction) type molecules.
  • teupolioside and its analogue metilteupolioside and a new phenylpropanoid denominated the isoteupolioside are the main components belonging to the class of caffeic derivatives, and are typically accompanied by less abundant products belonging to the same class.
  • High pressure liquid chromatography (HPLC) analysis is performed using a Phenomenex 4.6 ⁇ 150 mm C18 (2) column. Phase A - water/0.01 N phosphoric acid; Phase B - acetonitrile/0.01 N phosphoric acid; flow rate - 0.8 ml/min. Gradient: Time %B 0 0 10 10 15 20 20 25 25 35 30 45 35 55 40 0 The retention times of the 3 phenylpropanoids present in the extracts are reported in table 1. Table 1 - Retention times of the phenylpropanoids coded as A, B, D.
  • MS mass spectrometry
  • NMR nuclear magnetic resonance
  • the phenylpropanoid coded as FPA corresponds to the structure already known as teupolioside
  • FPB is b-(3,4-dihydroxyphenyl)ethyl- O-a-L-ramnopyranosyl (1"-3')-O-b-D-galactopyranosyl(1'"-2")-b-D-(4'-O-transferuloyl)glucopyranoside already previously described ( EP1118617 ) and more simply defined as metilteupolioside.
  • Antioxidant activity has been described for these two phenylpropanoids.
  • the phenylpropanoid coded as FPD has not been described in the literature so far. Fig.
  • teupolioside and isoteupolioside are set forth herein below.
  • Ajuga reptans Extracts 1 and 2, prepared as described in examples 1 and 2, and isoteupolioside have been used to assess in vitro antioxidant action with specific oxygen radical generating systems such as the superoxide anion (O 2 - ), the hydroxyl radical (HO - ), the peroxynitrite radical (ONOO - ) and the inhibition of lipid peroxidation.
  • the superoxide anion has been measured by a chemiluminescent assay based on the hypoxanthine(HPX)/xanthine oxidase (XOD) reaction using the Lumimax Superoxide Anion Detection Kit (Stratagene, La Jolla, CA, USA) and following the manufacturer's instructions.
  • Hydroxyl radical scavenger activity has been measured by means of the Fenton reaction for the production of hydroxyl radicals and chemiluminescent dosage (using a Victor 3 chemiluminometer, Wallac, Finland) with luminol.
  • Peroxynitrite ions have been determined by means of dosage with a spontaneous generator of peroxynitrites (3-morpholinosidnonimine hydrochloride; SIN-1) and a stable reagent for the nitroxyl ions (2-(4-carboxyphenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide potassium salt PTIO spin trap) then dosed by means of electron spin resonance (ESR) using a Nippon Denshi JES-FR30.
  • ESR electron spin resonance
  • Lipid peroxidation has been generated using Fe 2+ induced-oxygen reactive species, and detected using thiobarbituric acid in accordance with Buege, JA & Aust, SD: Microsomal lipid peroxidation (Methods Enzymol.
  • the Extract 1 and the Extract 2 set forth in Table 4 are derived from Ajuga reptans cell cultures comprising the phenylpropanoids at 90% and 54%, respectively. The results are expressed as the concentration inhibiting 50% of activity (IC 50 ), means of 6 independent assays.
  • the assayed Ajuga reptans extracts have shown themselves to be extremely effective scavengers of oxygen free radicals, independently of their degree of purity.
  • both Extract 1, and Extract 2 possess greater capacity with respect to the classic flavonoids, such as for example rutin and aloin.
  • the IC 50 for rutin and aloin is 10 ⁇ g/ml, 7.6 ⁇ g/ml and 12.3 ⁇ g/ml, respectively, concentrations approximately 6 to 30 fold higher with respect to Ajuga reptans Extract 1 and Extract 2.
  • the IC 50 for rutin and aloin for the inhibition of the production of hydroxyl radicals is 3.9 ⁇ g/ml and 2.9 ⁇ g/ml respectively, from 5 to 7 times higher with respect to the value determined for the Ajuga reptans Extacts.
  • the Extracts have also shown themselves to be extremely effective in reducing iron ion-induced lipid peroxidation.
  • the antioxidant activity of pure teupolioside is surprisingly less effective in comparison to Ajuga reptans Extracts 1 and 2 in activity assays against superoxide and hydroxyl radicals and, even though only slightly, in the inhibition of lipid peroxidase. This tends to indicate higher antioxidant activity in the Extracts with respect to pure teupolioside. Isoteupolioside has proved a little more effective than teupolioside, and however a little less effective than Extracts 1 and 2.
  • Anti-inflammatory activity has been assessed by measuring luminol dependent chemiluminescence generated by free radicals released from whole blood and from white blood cells.
  • the assay has been performed using the following protocol: 10 ⁇ l of fresh human blood is mixed with 0.980 ml of Hanks saline solution containing 5 ⁇ 10 -5 M luminol and the test sample (at various concentrations). The chemiluminescent response is recorded continuously for 30 minutes at a temperature of 37°C. The results are expressed as IC 50 (mg/ml), i.e. as the minimum sample concentration inhibiting chemiluminescence by 50% with respect to the control.
  • WBC white blood cells
  • IC 50 (mg/ml), i.e. as the minimum sample concentration inhibiting chemiluminescence by 50% with respect to the control.
  • Table 5 reports the values obtained for the these determinations.
  • Table No. 5 anti-inflammatory activity of Ajuga reptans extracts,teupolioside and isoteupolioside on whole blood and white blood cells.
  • the inhibition of the production of free radicals released by the white blood cells is correlated with the anti-inflammatory activity of the substance assayed.
  • the Extracts 1 and 2 of Ajuga reptans have proved to be effective inhibitors of the production of free radicals both from whole blood and white blood cells.
  • the inhibitory capacity shown by the extracts is greater than that of pure teupolioside and isoteupolioside.
  • Platelet enriched rabbit plasma has been used to assess the platelet anti-aggregating and disaggregating properties of Ajuga reptans Extracts compared with teupolioside and isoteupolioside.
  • Platelet rich plasma has been obtained from rabbit venous blood by mixing it with a 3.8% sodium citrate solution (9:1 v/v). The solution has then been centrifuged at 460 ⁇ g for 20 minutes. The supernatant has been collected and immediately used for the aggregation assays. Platelet aggregation has been recorded using a Chronolog "Ionised calcium platelet aggregometer" (Chronolog Co., USA). All measurements have been performed at 37°C with continuous stirring.
  • Platelet disaggregation (the disappearance of preformed aggregates) has been determined using the same luminous transmittance curve 10 minutes following the addition of ADP. The results are expressed as the DR/DRk ratio, where DRk and DR, are the luminous transmittance in the absence and presence of extract.
  • the test substances diluted in physiological solution (isotonic saline) (pH 7.4) are pre-incubated with the platelet rich plasma (1:10 v/v) for 5-40 minutes. The aggregation measurements have then been performed.
  • Physiological solution carrier has been added to the control samples (1:10 v/v). The values are set forth in Table 6 and Table 7. Table 6.
  • the isoteupolioside exhibited an activity similar to teupolioside.
  • the Extract 2 produces a very significant increase in the platelet disaggregating action at concentrations ranging between 0.01 mg/ml and 1 mg/ml.
  • the disappearance of small platelet aggregates is 1,5 fold greater than the control, while no significant anti-aggregating effects are evident on the platelet preparation.
  • the latency time for the beginning of the disaggregation step is significantly reduced from 5.3 minutes on average (control) to 3,7 minutes on average (Extract 2).
  • the teupolioside produces a modest inhibiting effect on platelet aggregation, only at 1 mg/ml concentration, whereas the extracts are not effective in preventing the platelet aggregation.
  • the chelating activities of Ajuga reptans extracts in relation to Fe 2+ , Fe 3+ , Cu 2+ and Ni 2+ metal ions has been determined by means of spectrophotometric measurements using a Shimadzu 1770 UV spectrophotometer.
  • the chelating activity of the Extracts 1 and 2 from Ajuga reptans , teupolioside and isoteupolioside in relation to Fe2+ and Ni2+ metal ions, is about 3-4 fold higher than the rutin reference molecule.
  • Juvenile acne shows a multifactorial aetiology; one factor which plays a fundamental role is the following: during puberty and adolescence, there is increased production of the hormone testosterone. In the skin, this hormone is converted by the enzyme 5 alpha reductase into the hormone dihydrotestosterone, the latter causes enlargement of the sebaceous glands with a concomitant increase in sebum secretion. High levels of the enzyme 5 alpha reductase is also one of the major causes of hair loss ( Thiboutot D., Harris G., Iles V., Cimis G., Gillilaud K., Hagari S. Activity of the type 1,5 alpha reductase exhibits regional differences in isolated sebaceous glands and whole skin. J. Invest. Dermatol. 1995; 105:209-14 ).
  • Determination of the 5 alpha reductase inhibitory activities by Ajuga reptans extracts in comparison to Serenoa repens extracts Said determination has been performed using enzymes (5 alpha reductase, type I and type II) produced by genetically modified yeast. Enzyme activities have been determined in the presence of Ajuga reptans extracts, teupolioside, isoteupolioside and Serenoa repens extracts.
  • Type I 5 alpha reductase activity has been assayed by incubating the enzyme in 0.1M Tris-citrate buffer (pH 7.0), containing 5 ⁇ M [ 14 C] radio-labelled testosterone (Amersham, Sweden) and 5 mM NADPH (Sigma) in a final volume of 5 ml. The solution thus obtained has been incubated for 1 hour at 37°C.
  • the steroids have been extracted using 5 ml of methylene chloride.
  • the extracts have then been dried under a stream of nitrogen and the dried residues obtained have been dissolved in 20 ⁇ l of a chloroform-methanol mixture (2:1 v/v).
  • An aliquot of said mixture has been deposited on the surface of a silica gel TLC plate.
  • the solvent mixture used to develop the TLC has been the sane used to solubilise the dried residues.
  • the R f values of the metabolites have been compared with those of standard steroids, chromatographed simultaneously with the other samples.
  • Ajuga reptans Extracts 1 and 2 teupolioside and isoteupolioside have significant inhibitory capacity in relation to the enzymes 5 alpha reductase (type I and type II) and lipoxygenase.
  • the inhibitory activity of the Ajuga reptans extracts, teupolioside and isoteupolioside is greater than that shown by Serenoa repens plant extracts, particularly in relation to type II 5-alpha reductase, which is the principal agent responsible for the onset of acne and androgenetic alopecia and is an important cause of prostate diseases.
  • the enzyme tyrosinase catalyses the reactions leading to melanin biosynthesis from tyrosine.
  • L-tyrosine is oxidised to 3,4 dihydroxyphenylalanine (L-DOPA), through the action of the enzyme tyrosinase, and again by means of a reaction catalysed by the same enzyme, 3,4 dihydroxyphenylalanine is converted to DOPAquinone.
  • Substances inhibiting tyrosinase activity produce a clearing/bleaching effect on the skin, since they block melanin synthesis.
  • the method used to determine the inhibition of tyrosinase activity in the oxidation reaction of L-tyrosine to L-DOPA is that described in Kim et al.
  • Table 10 Percentage tyrosinase enzyme activity inhibition in the oxidation of L-tyrosine to L-DOPA, by Ajuga reptans extracts, teupolioside and isoteupolioside in comparison to resorcinol and kojic acid.
  • Table 11 highlights the high inhibitory capacity of Extracts 1 and 2, isoteupolioside and teupolioside towards the enzyme tyrosinase activity.
  • the enzyme inhibitory activities of the Ajuga reptans extracts, teupolioside and isoteupolioside are higher with respect to those of the resorcinol reference molecule and similar to that of kojic acid.
  • A549 cells (ATCC-CCL185) have been seeded into wells with 3 ml of DMEM/ F12K HAM medium (Sigma-Aldrich) with 10% FCS and incubated at 37°C in a 5% CO 2 , water vapour saturated atmosphere. After 24 hours the culture medium is replaced by medium supplemented with BSO, which is left in contact with the cells for 20 hours. The medium is once again replaced with medium containing BSO in the presence or absence of the test compound. After 4 hours, quantitative measurement of the ROSs (hydroxyl radicals) is performed by washing the cells with phosphate buffer and then incubating them with 30 ⁇ M DCF-DA in buffer solution. At the end of a 15 minute incubation, excess DCF-DA is removed from the cells by washing, prior to measuring the fluorescence emitted.
  • ROSs hydroxyl radicals
  • Antioxidant activity measurements are performed using a (Hitachi F3010) spectrophotometer with excitation at 488 nm and measuring emission at 525 nm, and values are expressed in pmoles, by extrapolation from the calibration curve constructed using known quantities of DCF, and in relation to total cellular protein. Values are thus expressed in %ages with respect to the ROS content of the cells not subjected to treatment with BSO (control) to which are assigned a value of 100.
  • the Extracts 1 and 2 Teupolioside and Ascorbic Acid were solubilized in phosphate buffer 10mM at pH 7.4, whereas trolox was solubilized in 0,1% of dimethylsulphoxide and culture medium.
  • Ajuga reptans Extracts 1 and 2 significantly reduce ROS concentrantion, since they are comparable to each other and more effective than isolated teupolioside phenylpropanoid, while they result more effective than Trolox and ascorbic acid. TABLE 12. Anti-oxidating effect of Ajuga reptans Extracts 1 and 2 as compared with teupolioside, ascorbic acid and Trolox.
  • 3T3 fibroblasts (BALB/c mouse) are cultured in DMEM containing 20% calf foetal serum (FCS); the cells are seeded in 16mm-diameter 24-well plates and grown for 24 hours until reaching 50% confluence. The cells were subsequently incubated with BSO 200 ⁇ M: the BSO concentration used is sufficient to induce death in more than 87% cells within 24 hours. Cell survival has been calculated by colorimetry using MTT that colours the viable cells in blue, but not dead cells or lytic debris. The solubilized reaction products are measured by means of ELISA technique: a value directly proportional to the number of viable cells is obtained. The MTT absolute value obtained is normalized by small inner differences to the absorption in relation to the value of the control cultures considered as 100% viable cells.
  • Extracts 1 and 2 were solubilized in phosphate buffer 10 mM at pH 7.4, then added to the culture at the desired concentrations together with BSO.
  • Extracts 1 and 2 compared with Teupolioside and ascorbic acid on the death of 3T3 fibroblasts by BSO-induced oxidative damage.
  • an assay has been prepared, generally known as multiple dilution assay, with the following microbial strains: Pseudomonas aeruginosa ATCC 9027; Candida albicans ATCC 2091.
  • the phenylpropanoids FPD, FPA and the Extract 2 of Ajuga reptans were assayed at the concentrations of 0.5 mg/ml, 2 mg/ml and 5mg/ml.
  • the microbial strains for the test were inoculated in culture broths (in Triptone soy broth medium) containing the substances to be assayed at the concentrations described above.
  • culture broths containing the microbial strain alone have been prepared (controls).
  • the culture-broths have been incubated at 30°C for a period of 28 days. Samples of the various culture-broths have been taken at 0, 7, 14, 21 and 28 days, with the aim of counting the number of CFU/ml in relation to the various fungal strains, by plating the cultures on solid medium. A certain number of serial dilutions have been prepared for each sample in order to determine the microbial load of each culture-broth.
  • the data obtained from the tests allows one to deduce that phenylpropanoid isoteupolioside and teupolioside at 5 mg/ml concentration exert a significant inhibiting action in relation to the growth of Pseudomonas aeruginosa ATCC 9027 and Candida albicans ATCC 2091.
  • the Extract 2 exerts inhibition of the growth of the two micro-organisms to a less marked extent than the isoteupolioside and teupolioside pure molecules.
  • the extracts of the present application and the isoteupolioside are valid tools in the prevention and treatment of disease states associated with damage due to free radicals, such as: anoxia, trauma and inflammatory based diseases of the nervous system such as cerebral stroke, cerebral and spinal trauma, haemorrhagic shock, epilepsy, cerebral ischemia and ischemic spinal injury, peripheral neuropathy and cephalalgia (B.
  • degenerative type pathologies of the nervous system also associated with ageing or autoimmune based or having inflammatory components such as amyotrophic lateral sclerosis, multiple sclerosis, Parkinson's disease, Alzheimer's disease, senile dementia and Huntington's disease ( Olanow C.W. "A Radical Hypothesis for Neurodegeneration", TINS, 1993, 16(11):439-444 ; Dib M. Amyotrophic lateral sclerosis: progress and prospects for treatment.
  • Alpha-tocopherol protects against cisplatin-induced toxicity without interfering with antitumor efficacy Int J Cancer 2003 Mar 20;104(2):243-50 ); skin and mucosal disorders such as photolysis, actinic damage, skin ageing, atopy, diseases associated with karatinocyte hyperproliferation for example psoriasis, xeroderma, skin tumours ( Mittal A, Elmets CA, Katiyar SK CD11b+ cells are the major source of oxidative stress in UV radiation-irradiated skin: possible role in photoaging and photocarcinogenesis. Photochem Photobiol 2003 Mar;77(3):259-64 ; Pinnell SR.
  • Herpes Zoster Herpes Simplex e Citomegalovirus
  • disorders of the respiratory apparatus i.e. cystic fibrosis, asthma, rhinitis including due to allergies, "respiratory distress” and neonatal pulmonary hypertension ( Fortoul TI, Valverde M, Lopez Mdel C, Lopez I, Sanchez I, Avila-Costa MR, Avila-Casado Mdel C, Mussali-Galante P, Soria E, Rojas E. Nasal cytology and genotoxic damage in nasal epithelium and leukocytes: asthmatics versus non-asthmatics.
  • the inventive extracts, teupolioside and isoteupolioside are valid tools in the prevention and treatment of disease states associated with the formation of platelet clots and atheromatous plaques, besides finding use for the preservation and stabilisation of purified platelets for transfusional use.
  • the Ajuga reptans extracts, teupolioside and isoteupolioside of the invention are valid tools in the prevention and treatment of disease states associated with skin and cutis lesions caused by burns, incisions or lesions and mechanical trauma, diabetes sores and bedsores with facilitation of the cicatrisation and tissue repair processes. Due to the aforementioned biological activities, the extracts, teupolioside and isoteupolioside may be used as promoters of the tissue repair processes in cases of mucosal and endothelial lesions and ulcers, including those of the gastrointestinal tract and vaginal mucosa. Furthermore, the Ajuga reptans extracts, isoteupolioside and teupolioside can be effectively used, topically and systemically, for treating alterations of the scalp and favouring the hair vital cycle.
  • the extracts, teupolioside and isoteupolioside may be used for the treatment of numerous allergy-related pathologies, both systemic and cutaneous (for example: allergic skin reaction to Ni 2+ in topical cosmetic and pharmaceutical products). Said activity may be exploited in order to protect the body from harm caused by the presence of excess heavy metals, such as iron and copper, for example following thalassemia and other diseases with high haemosiderosis.
  • a combination of radical scavenging, anti-oxidant and chelating activities may form the basis for the use of Ajuga reptans extracts, teupolioside and isoteupolioside against disease processes caused by free radicals generated by the presence of excess heavy metals.
  • the Ajuga reptans extracts, teupolioside and isoteupolioside have a high inhibiting capacity in relation to the activities of the enzymes 5 alpha reductase, both type I and type II, and lipoxygenase, as shown in example 8.
  • This inhibitory capacity may be exploited for the treatment and prevention of hair loss in cases of androgenetic alopecia and alopecia aereata.
  • this activity may be exploited for the treatment of juvenile acne and in subjects affected by prostate diseases dependent on the activation of 5 alpha reductase.
  • Ajuga reptans extracts, teupolioside and isoteupolioside demonstrate high inhibitory activity in relation to the enzyme tyrosinase. This activity may be exploited in order to bring about bleaching effects on the skin.
  • compositions with teupolioside and isoteupolioside can be also effective as dietary supplements in case of oxidative stress conditions.
  • compositions or extracts While several specific examples of compositions or extracts have been set forth above in relation to particular activities, it is understood that, independently from the examples, all the extracts, teupolioside and isoteupolioside are capable of developing one or more of said therapeutic, cosmetic or nutritional activities for human, veterinary and zootechnical use.
  • the doses, times and routes of administration of the treatment will be selected on the basis of the type, stage, severity and location of manifestation of the pathology or nutritional state.
  • systemic and oral administration are indicated, but additionally also topical and transdermal, and in any case so as to make the active ingredient maximally available.
  • oral formulations administration in the form of tablets, lozenges and capsules, but also powders, suspensions and effervescent forms are preferred: for topical treatment, gels, creams, ointments and solutions compatible with dermal and mucosal use are preferred, in addition to eye washes for administration into the conjunctival sac.
  • the injectable forms are formulated using solvents for pharmaceutical use, compatible with intravenous, intramuscular and subcutaneous administration.
  • the therapeutic dose varies, depending on the patients age, weight, sex and type of pathology, between 1 mg and 2.5 g per day and preferably between 5 and 250mg per day, taken in a single dose or in 2-4 doses or in slow release form, depending on the patients therapeutic need, and however for periods of time not shorter than 30 days.
  • the same extracts, teupolioside and isoteupolioside may be formulated in the form of supplements, to be taken orally for prevention, or as aids in the treatment of changes resulting from disreactive states in humans or in veterinary medicine.
  • the active principles at the suitable concentrations and in suitable formulations can be also used in cosmetic applications.
  • UVB absorption range Thanks to the absorbance spectrum of the phenylpropanoids, which ranges from 240 nm to 350nm (UVB absorption range), such substances may be used for the preparation of sun filters.
  • the Ajuga reptans extracts may be formulated for use in the veterinary sector and as dietary supplements for zootechnical use, such as, as a non-limiting example, for the raising of fowl and fish.
  • the Ajuga reptans extracts, teupolioside and isoteupolioside for use in the preparation of drugs, cosmetics or nutritional substances, both human and zootechnical advantageously allow the provision of compounds capable of having unexpectedly greater antioxidant activity, in some cases, with respect to any individual phenylpropanoid.
  • Extracts, teupolioside and isoteupolioside can be advantageously used as cicatrizers and for mucosal tissue repair.

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EP05425585.6A 2005-06-20 2005-08-08 Extracts from Ajuga reptans cell lines, their preparation and use Expired - Lifetime EP1736166B2 (en)

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EP08162332.4A EP1997501B1 (en) 2005-06-20 2005-08-08 Isoteupolioside and uses
EP05425585.6A EP1736166B2 (en) 2005-06-20 2005-08-08 Extracts from Ajuga reptans cell lines, their preparation and use
US11/455,505 US9623063B2 (en) 2005-06-20 2006-06-19 Extracts from Ajuga reptans cell lines, their preparation and use
JP2006170554A JP5443664B2 (ja) 2005-06-20 2006-06-20 アジュガ・レプタンス細胞株由来の抽出物、その製造及び使用
JP2013173952A JP5788936B2 (ja) 2005-06-20 2013-08-23 アジュガ・レプタンス細胞株由来の抽出物、その製造及び使用

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EP2319914A1 (en) * 2009-11-09 2011-05-11 I.R.B. Istituto Di Ricerche Biotecnologiche S.r.l. Preparation and use of plant meristem cells with a high content of caffeic acid derivatives
EP2340808A1 (en) 2009-12-21 2011-07-06 I.R.B. Istituto Di Ricerche Biotecnologiche S.r.l. Synergic combination of phenylpropanoids, such as verbascoside or teupolioside, and mesalamine
IT1400234B1 (it) * 2010-05-07 2013-05-24 I R B Istituto Di Ricerche Biotecnologiche S R L Derivati esterei di fenilpropanoidi
CA2867257A1 (en) 2012-04-20 2013-10-24 Bagi Research Limited Materials and methods for prevention and treatment of viral infections
US9289374B2 (en) * 2014-04-23 2016-03-22 Lifevantage Corporation Topical compositions and methods for reducing oxidative stress
ITUB20159551A1 (it) * 2015-12-21 2017-06-21 Purytra Farm S P A Composizione farmaceutica per il trattamento dell?iperplasia prostatica
CN110636830A (zh) 2017-05-18 2019-12-31 麦迪那股份公司 天然糖基化多酚作为抗紫外线辐照影响的保护剂的用途
AU2019217292B2 (en) * 2018-02-06 2023-03-16 Shanghai Pharmaceuticals Holding Co., Ltd. Novel compound for preventing or treating neurodegenerative disease and application thereof
CN108776121B (zh) * 2018-04-08 2021-07-30 广州卡马生物科技有限公司 一种基于荧光猝灭原理对药材中抗氧剂的高通量筛选方法
WO2020008117A1 (fr) * 2018-07-06 2020-01-09 Laboratoires De Biologie Vegetale Yves Rocher Utilisation cosmetique de hrgp (hydroxyprolin rich glycoproteins) issues de cellules d'ajuga reptans pour prevenir et/ou lutter contre les effets du vieillissement de la peau
CN115466248B (zh) * 2022-02-08 2024-10-29 厦门稀土材料研究所 二萜类化合物及其提取方法和用途
CN115840019B (zh) * 2022-12-27 2025-01-07 贵州百灵企业集团制药股份有限公司 一种艾纳香药材质量检测方法
IT202300017805A1 (it) * 2023-08-30 2025-03-02 Idi Integratori Dietetici Italiani S R L Nuova composizione comprendente teupolioside e inositolo

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JP5443664B2 (ja) 2014-03-19
EP1736166B1 (en) 2008-09-24
EP1736166A2 (en) 2006-12-27
EP1997501A3 (en) 2008-12-17
JP5788936B2 (ja) 2015-10-07
US20070015262A1 (en) 2007-01-18
JP2007001977A (ja) 2007-01-11
US9623063B2 (en) 2017-04-18
EP1736166A3 (en) 2007-02-21
JP2013253099A (ja) 2013-12-19
EP1997501A2 (en) 2008-12-03
EP1997501B1 (en) 2015-07-22

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